628 



TREES OF NORTH AMERICA 



brown during their first winter, and. at the end of two or three years striped like the 

 trunk with broad pale lines; or often much smaller and shrubby in habit. Winter- 

 buds: terminal, conspicuously stipitate, sometimes almost ^' long, much longer than 



the axillary buds, covered by two thick bright red spatulate boat-shaped scales pro- 

 minently keeled on the back, the inner scales green and foliaceous, becoming l|'-2' 

 long, ^' wide, pubescent, and bright yellow or rose color. Bark of the trunk \'-^' 

 thick, reddish brown, marked longitudinally by broad pale stripes, and roughened 

 by many oblong horizontal excrescences. Wood light, soft, close-grained, light 

 brown, with thick lighter colored sap wood of 30-40 layers of annual growth. 



Distribution. Usually in the shade of other trees, often forming in northern 

 New England a large part of their shrubby undergrowth; shores of Ha-Ha Bay, 

 Quebec, westward along the shores of Lake Ontario and the islands of Lake Huron 

 to northeastern Minnesota, and southward through the Atlantic states and along the 

 Appalachian Mountains to northern Georgia; common in the north Atlantic states, 

 especially in the interior and elevated regions; of its largest size on the slopes of the 

 Big Smoky Mountains, Tennessee, and of the Blue Ridge in North and South 

 Carolina. 



Sometimes cultivated as an ornamental tree in the northern states, and occasion- 

 ally in Europe. 



3. Acer macrophyllum, Pursh. Broad-leaved Maple. 



Leaves cordate at the base by a deep narrow sinus deeply 3-5-cleft, with sinuate 

 acuminate divisions furnished with 2 or 3 acute lobes, and prominently 3-5-nerved, 

 puberulous when they unfold, especially on the upper surface along the principal 

 veins, and at maturity subcoriaceous, dark green and lustrous on the upper, pale on 

 the lower surface, 8'-12' in diameter, turning in the autumn bright orange color 

 before falling; their petioles stout, 10'-12' long, with enlarged bases united and en- 

 circling the stem and often furnished on the inside with small tufts of white hairs. 

 Flo-wers bright yellow, fragrant, \' long, on slender pubescent often branched pedi- 

 cels y-f' long, the staminate and pistillate together in graceful pendulous slightly 

 puberulous racemes 4'-6' long, appearing in April and May after the leaves are fully 

 grown; sepals petaloid, obovate, obtuse and a little longer and broader than the spat- 

 ulate petals ; stamens 9-10, with long slender filaments hairy at the base, exserted 



